UV400 PROTECTION --- Mirrored coated lens block 99% or 100% of UVB and UVA rays, UV 400 indicates an eye protection item that has been optimized to prevent eye exposure to both UVA and UVB radiation. UV 400 protected items are capable of blocking light rays as small as 400 nanometers. | TAC POLARIZED LENS --- Sunglasses are made with the most high quality TAC lenses, which are ultra lightweight and shatterproof. TAC technology is made with even lighter weight material and are even more unbreakable. They are impact resistant and offer perfect clarity of vision. Also, polarized sunglasses reduce glare reflected off of roads, bodies of water, snow, and other horizontal surfaces. Restore true color, eliminate reflected light and scattered light and protect eyes perfectly. | HIGH QUALITY MATERIALS --- Made with only the highest quality materials, these sunglasses were constructed using special design techniques, high quality metal frame, spring hinges and silicone nose pads that is enough for long time using, ensure durability and avoid breakage while engaging in sports and recreational activity. | All ROUNDER SUNGLASSES FOR WOMEN&MEN --- Endlessly modified and updated the classic aviator style will never fall out of favor and keep up with fashion trends. It is suitable for Houseboat, Driving, Running, Fishing, Racing, Skiing, Climbing, Trekking and other outdoor activities enthusiasts. This must be an essential high fashion accessory for women & men and daily wear all year round. It’s also gift packaged ready, making it a wonderful yet practical gift idea for friends and family. | PERFECT AFTER-SALES SERVICE --- All our products can enjoy perfect after-sales service. In case of any broken issues, please contact us without hesitation. We will provide the best service until our customers are satisfied.